lorrianemark Posted April 11 Share Posted April 11 It seems its extract duct to outside causing most noise. Also discovered it had split in coregated section after solid pipe from unit so have fix that. Link to comment Share on other sites More sharing options...
lorrianemark Posted April 11 Share Posted April 11 Anybody any idea why it's extract duct to outside most noisy.? Link to comment Share on other sites More sharing options...
dpmiller Posted April 11 Share Posted April 11 has the system been correctly commissioned and balanced? Link to comment Share on other sites More sharing options...
lorrianemark Posted April 11 Share Posted April 11 1 hour ago, dpmiller said: has the system been correctly commissioned and balanced? Yes It has. Its. Noise at the unit in attic is issue, seems to be noisiest at duct to outside expelling house air. Running at 45% fine, 50% bit noisy. Link to comment Share on other sites More sharing options...
Andehh Posted April 11 Share Posted April 11 We have a MVHR with silencers, can still hear it at 40% or higher. We set it at 15% for background ventilation, 75% boost and just let it do it's thing. When Humidity is higher outside it can sit at higher (30 - 50%) and it is audible but you get used to it eventually. If it becomes a problem, we raise the humidity allowance to 70% or something and it drops itself back down to something very low and inaudible. Link to comment Share on other sites More sharing options...
lorrianemark Posted April 11 Share Posted April 11 Ah it's OK @45% but just wondering why extract to outside duct sounds so much louder? Would dirty filters cause noise. Haven't changed in 10 months. Link to comment Share on other sites More sharing options...
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